/******************************************************************************
* Copyright (c) 2014 Liferay and Oracle
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Gregory Amerson - initial implementation
* Konstantin Komissarchik - initial implementation review and related changes
******************************************************************************/
package org.eclipse.sapphire.ui.diagram.actions;
import org.eclipse.sapphire.Event;
import org.eclipse.sapphire.Listener;
import org.eclipse.sapphire.ui.Presentation;
import org.eclipse.sapphire.ui.SapphireAction;
import org.eclipse.sapphire.ui.SapphireActionHandler;
import org.eclipse.sapphire.ui.def.ActionHandlerDef;
import org.eclipse.sapphire.ui.diagram.editor.SapphireDiagramEditorPagePart;
import org.eclipse.sapphire.ui.diagram.editor.SapphireDiagramEditorPagePart.ZoomLevelEvent;
/**
* @author <a href="mailto:gregory.amerson@liferay.com">Gregory Amerson</a>
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class ZoomInDiagramActionHandler extends SapphireActionHandler
{
@Override
public void init( SapphireAction action, ActionHandlerDef def )
{
super.init( action, def );
getPart().nearest( SapphireDiagramEditorPagePart.class ).attach
(
new Listener()
{
@Override
public void handle( Event event )
{
if( event instanceof ZoomLevelEvent )
{
refreshEnablement();
}
}
}
);
refreshEnablement();
}
private void refreshEnablement()
{
final SapphireDiagramEditorPagePart diagramEditorPagePart = getPart().nearest( SapphireDiagramEditorPagePart.class );
setEnabled( diagramEditorPagePart.getZoomLevel() < diagramEditorPagePart.getMaxZoomLevel() );
}
@Override
protected Object run( final Presentation context )
{
final SapphireDiagramEditorPagePart diagramEditorPagePart = getPart().nearest( SapphireDiagramEditorPagePart.class );
diagramEditorPagePart.setZoomLevel( diagramEditorPagePart.getZoomLevel() + 25 );
return null;
}
}